Calibrated spring module

Details Calibrated spring module Calibrated spring module

1986-02-24

1989-01-03

Wilson, John J.

Dentistry

Orthodontics

Means to transmit or apply force to tooth

433 22, A61C 300

Patent

active

047953420

ABSTRACT:
An orthodontic device for use in applying a constant calibrated force to certain teeth or groups of teeth so as to cause the teeth to change position within the mouth over a period of time. The device includes a spring module having a telescope mechanism with inner plunger portion and outer tube portion, and with a calibrated compression coil spring concentrically positioned on the inner plunger portion within the tube portion. The telescope plunger is of a bent arm configuration to assist in providing clearance relative to other installed orthodontic means. A notch is provided in the forward inner wall of the telescope tube to assist in controlling operation of the spring. A bifurcated yoke on the plunger end and a ball and socket type anchor pin on the tube end are employed to secure the device to brace wires mounted on the teeth of a patient. A flat plate is attached to the inner end of the anchor pin to exert force against adjacent teeth and thus counteract the tendency of the spring to rotate about its longitudinal axis.

REFERENCES:
patent: 360695 (1987-04-01), Holmes
patent: 473040 (1892-04-01), Wilder
patent: 2959856 (1960-11-01), Gurin
patent: 3238619 (1966-03-01), Brunson et al.
patent: 3508332 (1970-04-01), Armstrong
patent: 3618214 (1971-11-01), Armstrong
patent: 3798773 (1974-03-01), Northcutt
patent: 3964165 (1976-06-01), Stahl
patent: 4259065 (1981-03-01), DeWoskin
patent: 4462800 (1984-07-01), Jones

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